PSY 2114 Chapter Notes - Chapter 3: Fragile X Syndrome, Cystic Fibrosis, Klinefelter Syndrome

• School: University of Ottawa
• Department: Psychology
• Course: PSY 2114
• Professor: Gustavo Gottret

Document Summary

All organisms must adapt to particular places, climates, food sources, and ways of life. E. g. : attachment is an adaptive behaviour designed by natural selection to ensure an infant"s closeness to the caregiver for feeding and protection from danger. E. g. : sickness and aversion to certain foods during pregnancy may enhance the offspring"s ability to survive. Darwin observed that organisms reproduce at rates that would cause enormous increases in the population of most species, and yet populations remain nearly constant. An intense, constant struggle for food, water, and resources must occur among the many young born each generation because many of the young do not survive. Those who do survive pass on their genes to the next generation. Over many generations, organisms with characteristics needed for survival would compromise a larger percentage of the population of a given species and this could produce a gradual modification of the whole population.